Chemistry name: | aniline-2,4-disulfonic acid |
M Formula: | C6H3NH2(SO3H)2·2H2O |
Properties: | |
Needles decompose when heated above 120C. Very soluble in water and alcohol. | |
Derivation: | |
By heating sulfanilic acid with fuming sulfuric acid at 170–180C. | |
Use: | |
Dye intermediate. | |